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Old 11-12-2015, 05:17 PM   #11
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I am sorry to hear that but atleast I can rest easy knowing that I probably am not doing anything wrong. LOL Thanks for the reply!

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Old 11-12-2015, 07:16 PM   #12
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Location: Florien, LA
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RV Digestit. Google it or check your local RV place. Follow the directions on the bottle. Cleans EVERYTHING. Black tank, gray tank etc. I've only used it as a tank chemical, but we used it on a friend of mines where his gauges weren't working at all. There was crap that came out of that tank from probably 2 years before. It eats and breaks loose everything. All his gauges worked after that.

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Old 11-12-2015, 09:41 PM   #13
Join Date: Mar 2013
Location: Glendale
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I got a really good tip on treating both the grey and black tanks and has worked remarkably. Fill both tanks with water all the way up. Then add Murphy's oil soap and let them sit for at least 4 hours. I let mine set for a couple of days. Flush both 2 times. If you still have a bad reading when their empty repeat the process. 1 cup of the soap will be plenty for each tank. Nothing will cling to the walls or sensors after that. I used hot water on the first run to soak into the remnants of anything in the tanks. Once a season do this and nothing will stick to the inside of the tank.
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Old 11-13-2015, 09:13 AM   #14
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Originally Posted by Racinforthefinish View Post
My gray tank and black tank gauges are never accurate. I use Calgon water softener and dawn dish soap to keep them clean and it makes no difference, every day seems to be a different reading.
Same here. I pretty much ignore the black and gray water gauges.


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